March 1, 1918.

THE COLLIERY GUARDIAN.

417

By Tests The Best

RESULT OF LATEST TRIAL

no/ COAL p <Qo/ increase

Q SAVED 0L | Jj /O EVAPORATION

_____________________

“PERFECTA” BOILER CIRCULATOR Ltd., 39, Victoria Street, LONDON, S.W. 1.

___________________________________________________________________

AUTOMATIC DUMPING WITH MONOCABLE SYSTEM.

• 'A

ROPEWAYS LIMITED,

2, Eldon Street, South Place, London, E.C. 2.

IIIIIIIIIIIIIIIIIIIIIIIHIII CONSTRUCTORS OF |||||||||HIIIIIIIIIII|||||I

Aerial Ropeways

On the “ ROE ” Systems.

FOR the transport of all classes of
material over any ground, and
for the formation of dumps, spoil banks,
&c. Installations at present in opera-
tion with carrying capacities of 200
tons per hour and lengths of 30 miles.

Telephone—12780 Central.	Telegrams—“ Ropeways, London”

AUTOMATIC DUMPING WITH BICABLE SYSTEM.

xxeaait«uck^AA*aiwwM

TURBON.

The LATEST THING in FANS.

Equally suitable for Mine Ventilation, forced and induced
draught, or any other purpose.

Great strength, simplicity and silence.

Highest efficiency. Perfect balance at all speeds.

Suitable for all pressures.

Resists high temperatures without distortion.

No rivets in blades.

Manufactured by THE WADDLE PATENT FAN CO. LTD.,
---------------- FOB THE --___

TURBON PATENT FAN CO. LTD.,

LONDON Address	_ ___

34, Vlotorln Street, S.W. 1. JLrf	JEU JLd JL< X ■

MINIMUM POWER.

MINIMUM WEAR AND TEAR.

No Auxiliary Apparatus required for
Finishing the Product.

Heavy Construction.

OVER 4,000 CRIFFIN MILLS INSTALLED

Also extensively used for grinding

COAL. LIMESTONE. PORTLAND CEMENT.

PHOSPHATE ROCK. ORES OF ALL KINDS.

PREVENT COAL MINE EXPLOSIONS
by dusting your mine with stone 'ground in the

GIANT GRIFFIN MILL,
As supplied to the leading Collieries.

Advantages—

MAXIMUM PERCENTAGE OF “FLOUR” OR IMPALPABLE

MAXIMUM FINENESS.	POWDER.

MAXIMUM OUTPUT.

Full particulars on application to—

BRADLEY PULVERIZER CO.,

BL 37, WALBR00K, LONDON, E C.